Transaction in Own Shares

London Stock Exchange Group PLC
08 May 2007

                        London Stock Exchange Group plc



London Stock Exchange announces that on 08 May 2007 it acquired 245,000 of its
own ordinary shares of 6 79/86p each for cancellation at a price of 1288.1553
pence per share.

Further information is available from:


London Stock Exchange              John Wallace - Media                         020 7797 1222

                                   Paul Froud - Investor Relations              020 7797 3322






                      This information is provided by RNS
            The company news service from the London Stock Exchange